Zida za iron oxide zimatulutsa inki yomwe ili yopanda poizoni, yosakhetsa magazi, yolimbana ndi nyengo, komanso yopepuka.Natural iron oxides zimaphatikizapo kuphatikiza kwa ferrous or ferric oxides imodzi kapena zingapo, ndi zonyansa, monga manganese, dongo, kapena organics.Synthetic iron oxides imatha kupangidwa m'njira zosiyanasiyana, kuphatikiza kuwola kwachitsulo, monga ferrous sulfate, kupanga zofiira;mvula kutulutsa chikasu, zofiira, zofiirira, ndi zakuda (mwachitsanzo, njira ya Penniman-Zoph);ndi kuchepetsa organic mankhwala ndi chitsulo (mwachitsanzo, nitrobenzene kuchepetsedwa kukhala aniline pamaso pa mankhwala) kupanga chikasu ndi zakuda.Zofiira zimatha kupangidwa ndi calcining kaya wachikasu kapena wakuda.

Ndi amphamvu mu mphamvu ya tinting ndi opaque kwambiri kuposa mitundu ina kotero nthawi zambiri angagwiritsidwe ntchito pa chiŵerengero chochepa kusiyana ndi inki yachilengedwe.